Answered by Shaykh Faraz Rabbani
Sidi, is there any valid position in Islam (in any Madhab) that indicates that someone who misses an obligatory prayer does not have to make it up?
Walaikum assalam,
Ibn Qudama, Imam Nawawi, and many others have transmitted absolute scholarly consensus (ijma`) that it is obligatory to make up missed prayers and fasts. [See answers below.]
Modernist opinions to the contrary are unfortunate examples of straying from the Sunni path. Both the primary texts and the derived rulings of the Sunni schools of fiqh show the weakness of this position.
2) What can be done about someone who says something like this: “I am busy and doing all five prayers are difficult. Islam should not be a burden so I don’t have to perform those prayers.” If this problem is beyond the area of fiqh please advise accordingly.
This returns to weakness of iman. Its solution is to encourage them to have good company, to listen to or recite the Qur’an, and to attend lectures, and circles of knowledge and dhikr.
Walaikum assalam,
Faraz Rabbani.