Rav Chaim Kanievsky's Learning "Debts"
Rav Chaim Kanievsky called his daily learning quota "chovos", debts, and when he murmured about them at his engagement, the Elyashiv family was briefly alarmed.
From the article
From a young age, Rav Chaim accepted upon himself a rigorous study schedule. He referred to this learning as chovos, literally debts. If missed, these chovos needed to be paid. When Rav Chaim became engaged to Rav Elyashiv’s daughter, Rav Chaim was overheard murmuring about his “chovos.” Alarmed, a family member from the Elyashiv family was worried that Batsheva Elyashiv would start married life with a husband full of debts! Someone explained that “chovos” referred to his learning – not actual debt!