We counted Messenger’s saying a hundred times during one single sitting…

Bismillaah
1872.  Ibn `Umar (May Allah be pleased with them) said: We counted Messenger’s saying a hundred times during one single sitting: Rabb-ighfir li, wa tubb `alayya, innaka Antat-Tawwabur-Rahim. (My Rubb! Forgive me and pardon me. Indeed, You are the Oft-Returning with compassion and Ever Merciful.”
[Abu Dawud and At-Tirmidhi].

Hadith a Day (HAD2)
Seeking Forgiveness