NASAI-KUBRA 10201:
from Abū Burdah from his father —
the Messenger of Allah (saas) said: 'I seek the forgiveness of Allah and repent to Him one hundred times each day.' (Using translation from Ibn Mājah 3815)
الكبرى للنسائي ١٠٢٠١:
عن ابو برده عن أبيه —
أَنَّ النَّبِيَّ ﷺ قَالَ «إِنِّي لَأَسْتَغْفِرُ اللهَ وَأَتُوبُ إِلَيْهِ فِي الْيَوْمِ مِائَةَ مَرَّةٍ»