Agniveshyagrihyasutra 2.7.9.24

2.7.9.24

uttarasmin kāla āgate homaśced anivṛttaḥ pūrvasya seyaṃ kālātipattistasyāṃ prāyaścittaṃ mano jyotiḥ iti pūrvasya juhuyāt \

If, when the subsequent time has arrived, the offering of the prior [time] has not been concluded, that is a lapse of time. As an expiation for that, he should offer [the offering] of the prior [time] with: 'May Mind [and] Light…'