30. Dua of a son or daughter obedient to his or her parents
It is well known in the story narrated in hadith os three men who were trapped by a huge stone in a cave. One of them who was kind to kis parents asked Allah to remove the stone, and his dua was answered.
[Sahih al-Bukhari 3:36 #472]
31. Dua immediately after wudu
Umar ibn Al-Khattab reported that the Prophet (salAllahu alayhi wasalam) said:
'There is not one of you that makes wudu, and does it perfectly, then says: I testify that there is no diety worthy of worship except Allah. he is Alone, having no partners. And I bear witness that Muhammad is His slave and messenger', except that the eight gates of Paradise are opened for him, and he can enter into it through whichever one he pleases'
[Muslim #234, abu Dawud #162, Ahmad, an-Nasa'i]
Saying what has been mentioned in the hadith that is directly related to it (ablution)
32. Dua after stoning the Jamarat at Hajj
The stoning of the small Shaitan (jamrat sugra), or the middle Shaitan (jamrat wusta) pillars during Hajj.
It is narrated that the Prophet (salAllahu alayhi wasalam) would stone the small Jamarah (one of the three pillars that is stoned in the last days of Hajj), then face the qiblah, raise his hands, and make du'a for a long time. He would then stone the middle Jamarah and do the same. When he stoned the large Jamarah, he would depart without making any dua.
[Sahih al-Bukhari #1753 and others]
33. At the Crowing of a Rooster
Abu Hurairah (radiAllahu anhu) narrated that the Prophet (salAllahu alayhi wasalam) said:
'When you hear a rooster crowing, then ask Allah for His bounties, for it has seen an angel, and when you hear a donkey braying, then seek refuge in Allah from Shaitan, for it has seen a Shaitan'
[Sahih al-Bukhari, Muslim, Ahmad, Sahih al-Jami #611]
34. Dua made inside the Ka'bah
The Ka'bah is a sanctuary that has no comparison in the entire world. The du'a of one who prays inside the hijr is considered as being made inside the ka'bah, as it is part of the house (Baitullah). [This is the semicircle to the right of the Ka'bah if you face the door, opposite to the Yemeni corner and the Black stone wall.]
Usamah ibn Zayd narrated, 'When the Prophet (salAllahu alayhi wasalam) entered the House (Ka'bah), he made du'a in all of its corners
[Muslim 2: 968 and others]
35. Du'a on the mount of Safa or Marwah during Umrah or Hajj
It is narrated that the Prophet (salAllahu alayhi wasalam) would make long du'as at Safa and Marwah.
[Muslim #1218 and others]
36. Dua at any of the holy sites.
37. While reciting Surah al-Fatihah
The Prophet (salAllahu alayhi wasalam) said that Allah the Exalted had said:
' I have divided the prayer into two halves between Me and My servant, and My servant will receive what he asks for. When the servant says: Praise be to Allah, the Lord of the universe, Allah the Most High says: My servant has praised Me. And when he (the servant) says: The Most Compassionate, the Merciful, Allah the Most High says: My servant has lauded Me. When he (the servant) says:Master of the Day of Judgment, He remarks: My servant has glorified Me, and sometimes He will say: My servant entrusted (his affairs) to Me. When he (the worshipper) says: Thee do we worship and of Thee do we ask help, He (Allah) says: This is between Me and My servant, and My servant will receive what he asks for. Then, when he (the worshipper) says: Guide us to the straight path, the path of those to whom Thou hast been Gracious -- not of those who have incurred Thy displeasure, nor of those who have gone astray, He (Allah) says: This is for My servant, and My servant will receive what he asks for.
[Muslim 4: 395]
read more :Quran (mail 1) - Al Fatihah (01-07)
38. Saying 'Ameen' during prayer
After finishing the recitation of al-Fatihah, the saying of'Ameen' in congregation.
The Prophet (salAllahu alayhi wasalam) said: 'When the Imam says'Ameen', then recite it behind him (as well), because whoever's Ameen coincides with the Ameen of the angels will have all of his sins forgiven.'
[Sahih al-Bukhari #780, Muslim #410 and others]
39. While visiting the sick, and dua made by the sick
Umm Salamah narrated that the Prophet (salAllahu alayhi wasalam) said:
'When you visit the sick, or the dead then say good, because the angels say 'Ameen' to whatever you say
Ali (radiAllahu anhu) reported that the Prophet (salAllahu alayhi wasalam) said:
'When a Muslim visits his sick Muslim brother in the morning, seventy thousand angels make dua for his forgiveness till the evening. And when he visits him in the evening, seventy thousand angels make dua for his forgiveness till the morning, and he will be granted a garden for it in Jannah.'
[at-Tirmidhi, abu Dawud]
read more : Etiquettes of Visiting the Sick