Agnipurana 35.5

35.5

darbhodakañcātha hṛdā agnau kuṅkumarocanaṃ /
aiśānyāṃ śirasā dhūpaṃ śikhayā nairṛtepyatha //

And water with darbha grass with the heart mantra; in the southeast, saffron and rocanā; / in the northeast, incense with the head mantra; and with the crest mantra in the southwest;