Consider the following statements regarding Sufi literature:

1. Fawaid-ul-Fuad is a collection of discourses by Nizamuddin Auliya, compiled by his disciple Amir Hasan Sijzi.
2. Padmavat, an epic poem by Malik Muhammad Jayasi, blends Sufi themes with Indian folklore.
3. Kashf-ul-Mahjoob, authored by Ali Hujwiri, serves as a primary source of Sufi doctrine and includes biographies of early Sufi saints.
4. Awarif-ul-Ma’arif, written by Shaikh Shahabuddin Suhrawardi, focuses on the unity of all religious teachings.

Which of the statements are correct?