And we have lost a mountain of knowledge today

Narrated 'Abdullah ibn 'Amr ibn al-'As, that the Prophet of our Lord, peace and blessings be on him, said: "Allah does not take away knowledge (of religion) by taking it away from (the hearts of the) slaves, but He takes it (knowledge of deen) through the death of the Scholars ('Ulama) till no Scholar remains; then people will take as their leaders ignorant people who, when consulted, will give verdicts (and opinions) without knowledge. So, they (the ignorant people asked) will go astray and will lead the people (asking) astray." (Saheeh al-Bukhari and Saheeh Muslim)

I have just heard the news of one such death. And I thank my Lord for giving me the opportunity to see this Scholar live, during one of his lectures, and I supplicate to Allah that He is merciful to this Scholar in his grave. Indeed this is a calamity for the Muslims, may Allah replace him with someone who would be better than him.

Verily to Allah belongs what He took and to Him belongs what He gave, and everything with Him has an appointed time.

(Note: What is the ruling regarding announcing the death of the scholars and other than them via the internet and via news media(services); is this (considered) as an-na'yu (making an announcement of someone's death)?

Answer: Making an announcement about the death of a scholar and others from amongst the Muslims; There is no harm in announcing the death of a Muslim in order to supplicate for him and to offer the (funeral) prayer over him. This is not from an-na'yu. The Prophet (sal-Allaahu 'alayhi wa sallam) informed his Companions about the death of an-Najaashi when he died; So he and his Companions went out (to the masjid) to offer the funeral prayer in absence (of the deceased).)