In the name of Allah
Whether people’s religious rites are valid or not depends on the degree of their acquaintance with the Islamic law (shar‘) and on how they observe these rules. One of the ways to determine the rules of religion is following (doing taqlīd of) a qualified mujtahid.
To know the fatwās of our marji‘ of taqlīd, we can refer to his book on practical laws of Islam (risālah al-‘amaliyyah) that reflects his jurisprudential opinions and its correctness is confirmed.
Owing to the fact that after the demise of the Grand Ayatollah Araki (q.) and even before that time so many mukallafs have started taqlīd of His Eminence, the Grand Ayatollah Khamenei (d.), it seemed necessary to compile the differences between the late Imam Khomeini's (q.) fatwās and that of Ayatollah Khamenei (d.) to make them accessible for his followers and other people.
1. Some of the instances mentioned here do not reflect difference in fatwā but they may show something extra or an explanation for the ruling.
2. Those who follow the Supreme Leader (d.) can act upon their religious responsibilities by noticing the differences in the fatwās mentioned here. If any question regarding other matters is raised, they may forward it to His Eminence for being answered.
3. The fatwās of the late Imam Khomeini (q.) have been collected from the books of "Taḥrīr al-Wasīlah" published by Dār al-Aḍwā’/Beirut; "Tawḍīh al-Masā’il" published by Bonyād-e-Pejohishhay-e-Islami, Astan-e-Qods-e-Razavi; "Al-‘Urwah al-Wuthqā" (two volumes) published by al-Maktabah al-‘Ilmiyyah al-Islāmiyyah; and "Manāsik of Hajj" with its footnotes published by Nashr-e-Mash‘ar 1382 H.
4. The fatwās of His Eminence, the Grand Ayatollah Khamenei (d.) have been taken from the book "Ajwibah al-Istiftā‘āt" ('Replies to Inquiries About the Practical laws of Islam' published by Al-hoda International Publication, "Manāsik of Hajj" in Arabic language and some of the questions and answers available at the office of His Eminence.
You will find the fatwās of the late Imam Khomeini (q.) in the left column and that of Ayatollah Khamenei (d.) regarding the same issue in the opposite column