What is the Quranic interpretation of the difference between Wudu (ablution with water) and Tayammum (dry ablution with clean earth)? And why is the incident of the Ifk (slander) considered "good" in the Quran, and what is the grammatical analysis and interpretation of the verse? And how can Tayammum be understood as another form of Wudu without water? And what is our specific proof for Wudu from the Quran? And why did the Messenger (PBUH) go for Hajj in the sixth year of Hijra despite the dangers, and not in the subsequent years 7, 8, and 9 AH? And why do we believe in the disappearance of some prophets like Jesus, Al-Khidr, and Enoch, but not in the disappearance of the Mahdi?

To establish faith and clarify truth, one must be keen on understanding religious matters from their correct sources, and recognize the importance of the Prophetic Sunnah as an elucidation and application of the Quran. One should also avoid engaging in argument without knowledge, ask Allah for guidance, and keep company with the righteous. The Quran and Sunnah form an indivisible unit in Islamic legislation.

Firstly: The Prophetic Sunnah is no less important than the Holy Quran in legislation and explanation; it is a revelation from Allah, and a clarification and elaboration of it. Without it, a Muslim cannot perform acts of worship correctly, such as prayer, zakat, and Hajj, the details of which are found in the Sunnah. The Sunnah has independently established some rulings and prohibitions that are not mentioned in the Quran, such as the prohibition of gold and silk for men.

Secondly: Regarding ablution (Wudu) and dry ablution (Tayammum), the variance in legal rulings is Allah's right, and a Muslim must submit and obey. The verse about Wudu in Surat Al-Ma'idah (and your feet up to the ankles) indicates the obligation of washing the feet, which was applied by the Prophetic Sunnah and established in authentic narrations from the Prophet, peace be upon him, and the Companions.

Thirdly: The innocence of Aisha, may Allah be pleased with her, from the incident of the slander (Al-Ifk) is affirmed in the Holy Quran, where verses from Surat An-Nur were revealed to refute those who fabricated lies against her and to confirm her chastity and purity. Allah promised those who undertook the major part of the slander a great torment.

Fourthly: The Prophet, peace be upon him, did not perform Hajj in the year of Al-Hudaybiyah (the sixth year of Hijrah); rather, he came as an 'Umrah performer. Then he performed the 'Umrah of Qada' in the seventh year, the 'Umrah of Al-Ji'ranah in the eighth year, and the Farewell Hajj in the tenth year.

Fifthly: The matter of the awaited Mahdi is mentioned in authentic prophetic narrations, not in the Holy Quran.

Sixthly: One must continue to pursue beneficial knowledge, steer clear of barren arguments, seek help from Allah, accompany those who assist in good, and consult the methodologies of trusted scholars.