The Cambridge History of India, Vol. III: Turks and Afghans v3.c28.87

v3.c28.87

Drink was the curse of the race, and of the long line of eighteen kings there were few who were not habitual drunkards. Their addiction to this vice was the opportunity of informers, delators, and self-seekers, and inclined them to rash and inconsiderate action on the reports of such wretches. Such actions, as in the case of the murders of Nizām-ul-Mulk Ghūrī and Mahmūd Gāvān, were the proximate cause of the ruin of the dynasty and of the dismemberment of its kingdom.