It is narrated that Malik Ahmed Ishaq had heard from Bandagi Miyan Syed Khundmir Rz. that when Imam Mahdi Ahs went to the city of Budh, there was a trader who was favourable (muafiq) to the Mahdavis.
Miyan Syed Salamullah Rz went to the city on some errand. He happened to pass in front of the door of the trader unintentionally. The trader sent eighty thousand tinkas (local coins) to Imam Mahdi (AS) through him.
Imam Mahdi Ahs did not accept the amount.
Miyan Salamullah Rz said "Miranjio, Allah has sent it and has (caused it) to reach you".
Imam Mahdi (AS) asked "Why did you bring it? This is not said to have been sent by Allah. It is called halal (lawful). But it is not halal-e-tayyab (chastely lawful)".
(Insaaf Nama - Matan Sharif, N. 17)