瑜伽師地論略纂 16.22

16.22

「摩訶俱瑟恥羅」者，即舊云摩訶俱絺羅也。摩訶，云大；俱瑟恥，此云肚；羅，此云持。即大肚持也，即是舍利弗舅長爪梵志也。肚中，即三藏義。持三藏義，故名大肚持。

"Mahākoṣṭhila": formerly called Mahākoṭṭhita. 'Mahā' means great; 'koṣṭhi' means belly; 'la' means holder. That is, 'Great Belly-Holder'. This is the maternal uncle of Śāriputra, the Long-Nail Wanderer (Dīrghanakha). In the belly is the meaning of the Tripiṭaka. Because he held the meaning of the Tripiṭaka, he was named 'Great Belly-Holder'.