Identify the disciple of Shaikh Nizamuddin Auliya with the help of the following information:
1. He was a great poet and musician of the medieval period.
2. He gave a unique form to Chishti sama.
3. He introduced qawwali.
Amir Khusrau, a disciple of Shaikh Nizamuddin Auliya, is renowned as a versatile genius of the medieval period. He is credited with introducing qawwali and enriching Indian music and poetry.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?