Is it permissible to hold a mourning gathering (aza') for a female infant who passed away at the age of eight months?

It is permissible to offer condolences to the parents of a child by supplicating for them and enjoining them to patience and seeking reward from Allah, based on the Prophet's (peace be upon him) saying: "Verily, to Allah belongs what He takes and what He gives, and everything with Him has an appointed term. So, be patient and seek reward from Allah." As for holding a feast for that purpose, it is an reprehensible innovation. Similarly, sitting to receive condolences has been disliked by some scholars.