Conditions of Shafa'ah (Intercession)

The Conditions of Shafa'ah are three;

i) The Pleasure of Allah with the intercessor

ii) The Pleasure of Allah with the one, on behalf of whom the intercession is requested

iii) The Permission of Allah

The proof are the following verses,

"There are many angels in the heavens whose intercession will avail nothing except after Allah has given leave for whom He wills and pleases." [Soorah an-Najm (53): 26] 

"they cannot intercede except for him with whom He is pleased." [Soorah al-Anbiya (21): 28] 

"Who is he that can intercede with Him except with His Permission?" [Soorah al-Baqarah (2): 255] 

"On that day no intercession shall avail except the one for whom the Most Beneficent has given permission." [Soorah Ta-Ha (20): 109] 

This Shafa'ah will not benefit the disbelievers because Allah is not pleased with them. It is a condition of Shafa'ah that Allah is pleased with the one, on behalf of whom the Shafa'ah is requested. Therefore the idols of the mushrikeen whom the mushrikeen cling to and say, 'they are our intercessors with Allah,' will not benefit them and will not intercede for them rather they will increase their grief because Allah said, "Certainly! You (disbelievers) and that which you are worshipping now besides Allah are fuel for Hell!" [Soorah al-Anbiya (21): 98] So the idols' being the fuel of Fire will increase the sorrow of the disbelievers.