Compiled by Imam Yahya ibn Sharaf al-Nawawi
وعن عائشة رضي الله عنها، قالت: سمعت رسول الله صلى الله عليه وسلم يقول: “ إن المؤمن ليدرك بحسن خلقه درجة الصائم القائم” ((رواه أبو داود)).
I heard Messenger of Allah (ﷺ) saying: "A believer will attain by his good behaviour the rank of one who prays during the night and observes fasting during the day."[Abu Dawud].