In this katha clip, Sant Giani Hari Singh Ji (Randhawe Wale) provides the preface to the shabad 'Kalau Masaajanee Kiaa Sadhaieeaai Hiradhai Hee Likh Leh,' found on Ang 84 of Sri Guru Granth Sahib Ji Maharaj.
ਕਲਉ ਮਸਾਜਨੀ ਕਿਆ ਸਦਾਈਐ ਹਿਰਦੈ ਹੀ ਲਿਖਿ ਲੇਹੁ ॥
Why ask for a pen, and why ask for ink? Write within your heart.