Shiva Purana
चिच्छेद बहुशो देवो ब्रह्मणः पञ्चमं शिरः ॥ शिवनिन्दां प्रकुर्वंतं पुत्रेति कुमतेर्हठात् ॥ १९ ॥
The lord cut off the fifth head of Brahmā who stubbornly and repeatedly censured Śiva calling him “O son.”
english translation
ciccheda bahuzo devo brahmaNaH paJcamaM ziraH ॥ zivanindAM prakurvaMtaM putreti kumaterhaThAt ॥ 19 ॥
hk transliteration by Sanscript