What are the conditions for correct worship in Islam?

For an act of worship to conform to Islamic Law, six conditions must be met:

1. The Cause: The cause for the act of worship must conform to Islamic Law. It is not permissible to worship based on an unproven cause. For example, celebrating the Isra and Mi'raj on the twenty-seventh of Rajab is an innovation (bid'ah) whose cause has not been established legally or historically. Celebrating any holiday other than Eid al-Fitr, Eid al-Adha, and Friday is disliked (makrooh). 2. The Type (Jins): The act of worship must be of the type prescribed by Allah, such as the sacrifice (udhiyah), which must only be from livestock (bahimat al-an'am). 3. The Quantity (Qadar): The quantity of the act of worship must conform to what Allah has prescribed. It is not permissible to increase or decrease from the number specified by Islamic Law. 4. The Manner (Kayfiyyah): The act of worship must be performed in the manner specified by Islamic Law. For instance, violating the order of ablution (wudu') invalidates it. 5. The Time (Zaman): The act of worship must be performed at its prescribed time. If one performs a time-bound act of worship outside its time without a valid excuse, it is rejected. 6. The Place (Makan): The act of worship must be performed at its legally designated place. For example, standing at Arafah in Muzdalifah, or performing i'tikaf (seclusion for worship) in a place other than a mosque, is not valid.