Śatapatha Brāhmaṇa ("of a hundred paths") 3.2.1.30

3.2.1.30

athollikhati | susasyāḥ kṛṣīskṛdhīti yajñamevaitajjanayati yadā vai suṣamam bhavatyathālaṃ yajñāya bhavati yado duḥṣamam bhavati na tarhyātmane canālam bhavati tadyajñamevaitajjanayati

Thereupon he draws (with the horn) the ('easterly') line, with the text, 'Make the crops full-eared!' Thereby he produces the sacrifice; for when there is a good year, then there is abundant (material) for sacrifice; but when there is a bad year, then there is not even enough for himself: hence he thereby produces the sacrifice.