I asked Umm Salamah (رضي الله عنها), “O Mother of the Believers! Which supplication did the Messenger of Allah (صلى الله عليه و سلم) make frequently when he was in your house?” She said: “He (صلى الله عليه و سلم) supplicated frequently:
‘O Controller of the hearts make my heart steadfast in Your religion.'” [Riyadhus Saliheen- At-Tirmidhi]
Narrated Abu Hurairah (رضي الله عنه):
Allah’s Messenger (صلى الله عليه و سلم) said:
“During your sleep, Satan knots three knots at the back of the head of each of you, and he breathes the following words at each knot, ‘The night is, long, so keep on sleeping,’ If that person wakes up and celebrates the praises of Allah, then one knot is undone, and when he performs ablution the second knot is undone, and when he prays, all the knots are undone, and he gets up in the morning lively and cheerful, otherwise he gets up dull and gloomy. ” [Sahih Al-Bukhari]
Hudhaifa (رضي الله عنه) narrated that:
Whenever the Prophet (صلى الله عليه و سلم) lay down for sleep at night, he would place his (right) hand under his (right) cheek and supplicate: “Allahumma bismika amootu wa ahyaa [O Allah, with Your Name will I die and live (wake up)].” And when he woke up, he would supplicate: “Al-hamdu lillahil-ladhi ahyanaaa ba’da maa amaatanaa, wa ilaihin-nushur (All praise is due to Allah, Who has brought us back to life after He has caused us to die, and to Him is the return).” [Sahih Al-Bukhari]
Anas ibn Malik (رضي الله عنه) reported Allah’s Messenger (صلى الله عليه و سلم) as saying.
None of you should make a request for death because of the trouble in which he is involved, but if there is no other help to it, then say: O Allah, keep me alive as long as there is goodness in life for me and bring death to me when there is goodness in death for me.
Ibn Mas’ud (رضي الله عنه) said:
The Messenger of Allah (صلى الله عليه و سلم) said,
“He who says: ‘Astaghfir ullah-alladhi la ilaha illa Huwal-Haiyul-Qayyumu, wa atubu ilaihi (I seek the forgiveness of Allah, there is no true god except Allah, the Ever-Living, the Self- Subsisting, and I turn to Him in repentance),’ his sins will be forgiven even if he should have run away from the battlefield (while he was engaged in fighting for the Cause of Allah).”
This is the du’aa in arabic:
أستغفر الله الذي لا إله إلا هو الحي القيوم وأتوب إليه