All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
A pilgrim is not required to offer the Udh-hiyah, whether he performs the Tamattu‘, the Qiraan or the Ifraad Hajj. Rather, a pilgrim who performs the Tamattu‘ or the Qiraan Hajj is required to offer Hady (a Hajj sacrificial animal).
It is not clear to us what the questioner means by the statement "I received the receipt for the Udh-hiyah after the end of the rituals."
In any case, the sacrificial animal for one who performs the Tamattu‘ or the Qiraan Hajj is one of the Hajj obligatory actions, not pillars. Failing to offer the sacrificial animal does not invalidate Hajj. Consequently, your Hajj is valid and you are not required to make up for Hajj, according to the consensus of scholars.
If you performed the Tamattu‘ or the Qiraan Hajj and you paid the price of the sacrificial animal to a trusted authority in order to slaughter on your behalf, then you have fulfilled this duty. You are blameless for delay in receiving the receipt as long as this does not mean neglecting slaughtering. But if this means that the authorized authority did not slaughter on your behalf until the days of Tashreeq ended, you can slaughter later. A person who did not slaughter in the prescribed fixed time slaughters later or sends someone to Makkah in order to buy the sacrificial animal and slaughter it.
Ibn Baaz said:
A person who did not slaughter during the days (of Tashreeq) because he was unable to do so, or did not have money except after Hajj, or lost his animal and then found it later, or he borrowed money and then bought, he slaughters even after these days, as in the case of making up.
Regarding a person who forgot to slaughter the sacrificial animal and left Makkah, Ibn ‘Uthaymeen said:
A person who did not (offer Hady) is required immediately to send money to someone whom he knows in Makkah in order to buy a sheep and slaughter it on his behalf in Makkah.
Allaah Knows best.