Mus’ab bin Sa’d narrated from his father, that :

the Messenger of Allah said to those sitting with him: “Is one of you incapable of attaining a thousand good deeds?” So a questioner among those seated with him asked him: “How can one of us earn a thousand good deeds?” He said: “(When) one of you recites a hundred Tasbihat a thousand good deeds are written for him, and a thousand evil deeds are wiped away from him.”

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، حَدَّثَنَا مُوسَى الْجُهَنِيُّ، حَدَّثَنِي مُصْعَبُ بْنُ سَعْدٍ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لِجُلَسَائِهِ " أَيَعْجِزُ أَحَدُكُمْ أَنْ يَكْسِبَ أَلْفَ حَسَنَةٍ " . فَسَأَلَهُ سَائِلٌ مِنْ جُلَسَائِهِ كَيْفَ يَكْسِبُ أَحَدُنَا أَلْفَ حَسَنَةٍ قَالَ " يُسَبِّحُ أَحَدُكُمْ مِائَةَ تَسْبِيحَةٍ تُكْتَبُ لَهُ أَلْفُ حَسَنَةٍ وَتُحَطُّ عَنْهُ أَلْفُ سَيِّئَةٍ " . قَالَ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .