Al-Bayhaqee relates from ‘Aaishah (may Allaah be pleased with her) that the Prophet (peace and blessings of Allaah be upon him) said:“There is no time in which the son of Aadam does not remember Allaah in it, except that it will be a source of regret for him on the Day of Judgement”
authenticated by Shaykh al-Albaanee in Saheehul-Jaami’ (no.5720)