Shatapatha Brahmana 13.8.1.10

13.8.1.10

kamvati kuryāt kam me'sadityatho śamvati śam me'saditi nādhipathaṃ kuryānnākāśe nedāviraghaṃ karavāṇīti

Let him make it in a pleasant (spot), in order that there should be pleasure for him; and in a peaceful (spot), in order that there should be peace for him. He must not make it either on a path, or in an open space, lest he should make his (the deceased's) sin manifest.