The Indian rupee gained 48 paise to 51 rupees 72 paise per US dollar in early trade today. The rupee resumed higher at 51 rupees 84 paise per dollar on the Interbank Foreign Exchange, as against its previous close of 52 rupees 21 paise per dollar, and moved up further to 51 rupees 72 paise per dollar before quoting at 51 rupees 77 paise per dollar in morning deals.