Starting in about 1891, Mirza Ghulam Ahmad claimed that God had taught him 40,000 consonantal roots of the Arabic language. He gave many challenges around his claimed mastery of Arabic, which included challenges of plain Arabic writing and challenges of exegesis of the Quran.

Fifty Rupees Challenge

Mirza Ghulam Ahmad challenged Muhammad Hussain Batalvi and others to distinguish his writings from the writings of renowned Arab authors. (Hujjat-Ullah Appendix Page 7)