Adh-Dhariyat - 51:18

وَبِالْأَسْحَارِ هُمْ يَسْتَغْفِرُونَ
[51:18]
And in the morning they asked forgiveness.
And in the hour of early dawn, they (were found) praying for Forgiveness;
And ere the dawning of each day would seek forgiveness,