Yahya related to me from Malik from al Ala ibn Abd ar-Rahman ibnYaqub from his father from Abu Hurayra that the Messenger of Allah,may Allah bless him and grant him peace, said, "Shall I tell you thethings by which Allah erases wrong actions and by which he raisesranks:
the complete and correct performance of wudu in adverseconditions, a great number of steps towards the mosque,and waitingafter one prayer for the next prayer. That is the firm hold, that isthe firm hold, that is the firm hold."
USC-MSA web (English) reference: Book 9, Hadith 58
Arabic reference: Book 9, Hadith 389