Istighfar - From the Sunnah #10
اَللّٰهُمَّ اغْفِرْ لِلْمُؤْمِنِيْنَ وَالْمُؤْمِنَاتِ
(1x)
Translation
O Allah, forgive the believing men and the believing women.
Transliteration
Allāhumma-ghfir lil-mu’minīna wa-l-mu’mināt.
Virtue
Umm Salamah (raḍiy Allāhu ‘anhā) narrates that the Messenger of Allah ﷺ said: “Whoever says [the above] everyday, he will receive a reward for every believer.” (Tabarānī in Muʿjam al-Kabīr 23/370)

ʿUbādah (raḍiy Allāhu ‘anhu) narrates that the Messenger of Allah ﷺ said: “Whoever seeks forgiveness for the believing men and women, Allah will write a good deed for every believing man and woman.” (Tabarānī in Musnad al-Shāmiyyīn 2155)