The Indian subcontinent has witnessed great masters in the science of Hadith and Fiqh to which the whole world, including the Arab scholars, is indebted. No major Islamic library is empty from the works of these great scholars.
They compiled some major works (in Arabic) that are unparalleled in recent times, such as:
1) Bazl al-Majhud fi hal Sunan Abi Dawud:
One of the most detailed commentary in Arabic on the Sunan of Imam Abu Dawud in approximately 20 volumes, authored by Shaykh Khalil Ahmad al -Saharanfuri (Allah have mercy on him).
2) Fath al-Mulhim Sharh Sahih Muslim
by Shaykh Shabbir Ahmad al-Usmani (Allah have mercy on him): A commentary on the Sahih of Imam Muslim which remained incomplete until the great contemporary Hadith and Fiqh master, Shaykh Mufti Muhammad Taqi Usmani (Allah have mercy on him) completed it.
Regarding the original work by Shaykh Shabbir Ahmad al-Usmani, the great Imam Zahid al- Kawthari wrote a whole article in his “al-Maqalat” stating that it filled the gaps left by the early commentators of Sahih Muslim including Imam Nawawi (Allah have mercy on him)
3) Awjaz al-Masalik ila Mu’atta Imam Malik:
The Arabic commentary in around 6 volumes on the Mu’atta of Imam Malik by the great Indian Hadith master, Shaykh al-Hadith, Imam Muhammad Zakariyya al-Kandahlawi (Allah have mercy on him).
4) I’la al-Sunan: A great 18 volume
encyclopaedia in Hanafi Fiqh which amazed the world over. Arab Scholars were also amazed by the brilliance of the author, Shaykh Dhafar Ahmad al-Usmani who compiled this work under the supervision and instruction of his uncle and teacher, Imam Ashraf Ali al-Tahanawi (Allah have mercy on them both)
There are many more works, such as
5.Faydh al Bari (commentary on Sahih al-Bukhari in 4 volumes) by Imam Anwar Shah al-Kashmiri,
6.Ma’arif al-Sunan (commentary on Sunan Tirmidhi) by Shaykh Yusuf Binnori,
7.Hayat al-Sahabah in 3 Volume by Shaykh Yusyuf al-Kandahlawi,
8.And works of the great Hadith and Fiqh master, Imam Abd al-Hay al-Lakhnawi .works of Shaykh Habib al-Rahman al-A’zami
And Many more (Allah have mercy on them)