It is narrated from Umar ibn Yazid that Imam Jafar ibn Muhammad Al-Sadiq عليه السلام that He said: "Whoever says during his Witr prayer (while performing the single-unit prayer of Witr) 'Astaghfirullah Rabbi wa Atubu Ilayh' (I seek forgiveness from Allah سبحانه وتعالى, my Lord عز وجل, and I turn to Him in repentance) seventy times, and continues to do so regularly until a year passes, Allah سبحانه وتعالى will write him among 'those who seek forgiveness in the early hours of the morning,' and Paradise and forgiveness from Allah سبحانه وتعالى, the Mighty and Glorious, will become obligatory for him."