Question text Is there a verse in Holy Qur’an which considers offering Namaz before its time prohibited, for example, one week in advance?
categorization: Qur’an and the Rules
Answer
The timings of Namaz (prayer) has been outlined in the Holy Qur’an. For example, the verse: “Establish “Salaat” (Namaz) from the decline of the sun till the darkness of the night, and the recital at the morn; verily the recital of the morn is witnessed.” Hence offering a Namaz before its time is a violation of Allah’s commandments which is unlawful. Sayyed Mohammed Musawi

resources
Ref: www.wabil.info