Shiva Purana
ऐशान्यां पद्ममालिख्य शुद्धलिप्ते महीतले ॥ शिवकुंभं शोधयित्वा तत्रावाह्य शिवं यजेत् ॥ १७ ॥
A mystical lotus-diagram shall be drawn in the north-east on a spot of ground well-smeared. The water vessel of Śiva shall be purified. Śiva shall be invoked and worshipped.
english translation
aizAnyAM padmamAlikhya zuddhalipte mahItale ॥ zivakuMbhaM zodhayitvA tatrAvAhya zivaM yajet ॥ 17 ॥
hk transliteration by Sanscript