He persists with his request until he gets what he needs. Only then, with the loaves in his possession, can he be a proper host.
وَعِنْدَئِذٍ فَقَطْ ،‏ أَيْ حِينَ تَكُونُ ٱلْأَرْغِفَةُ فِي حَوْزَتِهِ ،‏ يَكُونَ مُضِيفًا جَيِّدًا .‏