Bhagavad Gita Chapter 4 Verse 31

Gita 4.31

यज्ञशिष्टामृृतभुजः, यान्ति, ब्रह्म, सनातनम्,
न, अयम्, लोकः, अस्ति, अयज्ञस्य, कुतः, अन्यः, कुरुसत्तम।।31।।

Gita 4.31

YagyashishtaamrtbhujH, yaanti, Brahm, sanaatanm’,
Na, ayam’, lokH, asti, ayagyasya, kutH, anyaH, kurusattam ||31||

Translation: (Kurusattam) O best of Kurus, Arjun! (yagyashishtaamrtbhujH) the wise worshippers saved from the above-mentioned scripture-opposed religious practices by enjoying the benefit left from the scripture-based worship (sanaatanm’ brahm) Aadi Purush Parmeshwar i.e. Purna Brahm/the Supreme God (yaanti) attain and (ayagyasya) for a man who does not do bhakti of the Supreme God according to the injunctions of the scriptures (ayam’) this (lokH) world of men/Earth also happiness-giving (na) not (asti) is then (anyaH) Parlok/other world (kutH) how can be happiness-giving? (31)

Gita 4.31: O best of Kurus, Arjun! The wise worshippers saved from the above-mentioned scripture-opposed religious practices by enjoying the benefit left from the scripture-based worship attain Aadi Purush Parmeshwar i.e. Purna Brahm, and for a man, who does not do bhakti of the Supreme God according to the injunctions of scriptures, even this world of men is not happiness-giving, then how can the other world be happiness-giving?

Meaning - Bhagavad Gita Chapter 4 Verse 31: - The purport of enjoying the nectar/benefit left over from the yagya is that the worshippers who worship Purna Parmatma do jaap of mantra which opens the lotuses in their bodies. Those mantras are also jaap of Shri Brahma ji, Shri Vishnu ji and Shri Shiv ji and Shri Durga ji, which makes one attain worldly comforts. By jaap of these one becomes free from the debt of the above-mentioned gods and goddesses. After paying the debt of mantra-jaap, the residual earning of jaap which is left, a worshipper of Purna Parmatma attains a lot of worldly benefits from it. In this Verse 31, this only has been said that a worshipper of Purna Parmatma by using the residual earning of bhakti from the yagya i.e. sadhna (rite) attains Purna Parmatma. The meaning is that a worshipper who worships Purna Parmatma according to the rule gets more worldly comforts as well as complete salvation.

Important – This very evidence is mentioned in Gita Chapter 3 Verse 13 and also in Gita Chapter 16 Verse 23-24 that oh Bharat, those devotees who abandoning the injunctions of the scriptures follow arbitrary behaviour i.e. arbitrary way of worship, they neither attain any happiness, nor spiritual success, nor any destination. In other words it is useless. Therefore, it is beneficial to only follow whatever is ordained in the scriptures i.e. Vedas regarding the acts of bhakti-sadhna which should be done and which should not be done.