'Aishah (May Allah be pleased with her) reported:
Prior to his demise, the Messenger of Allah (ﷺ) used to supplicate frequently: Subhan Allahi wa bihamdihi; Astaghfirullaha wa atubu ilaihi (Allah is free from imperfection, and I begin with praising Him. I beg forgiveness from Allah and I turn to Him in repentance."[Al-Bukhari and Muslim]. (DE)
App reference (DE): Book 20, Hadith 9 (DE)
Arabic/English book reference (DE): Book 20, Hadith 1877 (DE)