In ancient Indian Buddhist monasteries, a ceremony called Pavarana used to be held. What was it?

Consider the following statements:
$1$. 'Kitab-i-Nauras' is a collection of songs in praise of Hindu deities and Muslim saints, was written by Ibrahim Adil Shah II.
$2$. Amir-Khusrau was the originator in India of the early form of the musical style known as Qawwali.
Which of these statements is/are correct?