Allah Almighty says, “Has the time not arrived for the hearts of those who believe to yield to the remembrance of Allah and to the Truth He has sent down and not to be like those who were given the Book before for whom the time seemed over long so that their hearts became hard?” (57:16)
and the Almighty says, “Then We sent Our Messengers following in their footsteps and sent ‘Isa son of Maryam after them, giving him the Injil. We put compassion and mercy in the hearts of those who followed him. They invented monasticism We did not prescribe it for them purely out of desire for the pleasure of Allah, but even so they did not observe it as it should have been observed.” (57:27)
The Almighty says, “Do not be like a woman who spoils the thread she has spun by unravelling it after it is strong.” (16:92)
and the Almighty says, “And worship your Lord until what is Certain comes to you.” (15:99)
The hadiths regarding this include the hadith of ‘A’isha, “The deen He likes best is the one in which there is constancy,” which is in the previous chapter.
153. ‘Umar ibn al-Khattab reported that the Messenger of Allah, may Allah bless him and grant him peace, said, “If anyone sleeps through his hizb in the night, or through something else he normally does, and then recites between the Fajr prayer and theDhuhr prayer, it is written for it as if he had recited it during the night.” [Muslim]
154. ‘Abdullah ibn ‘Amr ibn al-‘As said, “The Messenger of Allah, may Allah bless him and grant him peace, said to me, “‘Abdullah, do not be like so-and-so who used to pray at night and then stopped doing it.'” [Agreed upon]
155. ‘A’isha said, “When the Messenger of Allah, may Allah bless him and grant him peace, missed the night prayers due to illness or some other reason, he would pray twelve rak’ats during the day.” [Muslim]