Mantra 7

स ह क्षत्तान्विष्य नाविदमिति प्रत्येयाय तं होवाच यत्रारे ब्राह्मणस्यान्वेषणा तदेनमर्च्छेति ॥ ४.१.७ ॥

In plain words

The attendant searched and came back saying, "I have not found him." He said to him, "Where a brahmin is to be sought, there go and look for him."