The famous Sufi poet and musician Amir Khusrow was a devoted disciple of which Sufi saint among the following?

Introduction / Context:
Questions connecting medieval personalities often ask about guru–disciple relationships, especially in the context of Sufism and Bhakti traditions. Amir Khusrow is a legendary figure known for his poetry, music, and deep devotion to his Sufi master. Identifying his spiritual guide tests your knowledge of Delhi Sultanate era culture.

Given Data / Assumptions:

• The personality in question is Amir Khusrow, a famous Sufi poet and musician.
• The question asks whose disciple he was.
• The options include Mirza Ghiyas Beg, Nizamuddin Auliya, Asadulla Beg, and Sheikh Salim Chisti.

Concept / Approach:
Amir Khusrow is historically remembered as the devoted disciple of the Chishti Sufi saint Hazrat Nizamuddin Auliya of Delhi. This relationship is central to many stories about Khusrow's life and art. The other names either belong to different historical contexts or have no strong direct disciple–guru connection with Khusrow in standard accounts.

Step-by-Step Solution:
Step 1: Recognise that Amir Khusrow is linked with the Chishti Sufi order in Delhi. Step 2: Recall the name of the famous Chishti saint of Delhi: Nizamuddin Auliya. Step 3: Match Nizamuddin Auliya with the role of Khusrow's spiritual master and guide. Step 4: Note that Mirza Ghiyas Beg was a nobleman and is not known as Khusrow's Sufi master, and that Asadulla Beg is not associated with such a relationship. Step 5: Select ‘‘Nizamuddin Auliya’’ as the correct answer.

Verification / Alternative check:
Khusrow's poetry and legends often depict his deep love and loyalty for Nizamuddin Auliya. There are many stories of him serving at the saint's khanqah (monastic lodge). Sheikh Salim Chisti is also a famous Sufi saint but is associated more with Akbar's time and Fatehpur Sikri, not with Amir Khusrow's discipleship.

Why Other Options Are Wrong:
Mirza Ghiyas Beg: A Mughal noble and father of Nur Jahan, not Khusrow's Sufi master.
Asadulla Beg: Not widely recorded as the Sufi mentor of Amir Khusrow.
Sheikh Salim Chisti: A revered Sufi saint, but from a different context and not the specific master of Khusrow.

Common Pitfalls:
Students sometimes confuse different Sufi saints because many names appear in medieval Indian history. A powerful memory link is ‘‘Khusrow and Nizamuddin’’ as a famous pair of disciple and master. Keeping such pairs in mind helps answer similar questions quickly.

Final Answer:
Amir Khusrow was the disciple of the Sufi saint Nizamuddin Auliya.