This passage can be found in Vol. II of the Budha Dal Steek of Sarbloh Granth on page 496.
ਅਥ ਗ੍ਰੰਥ ਸਥਾਪਨ ਮਹਾਤਮ ਸ੍ਰੀ ਸਤਿਗੁਰੂ ਬਿਗ੍ਰਹ ਕਥਤੇ
Now begins the section where praise is bestowed on the form of the Satiguru, the Granth
ਤ੍ਵ ਬਲਿ
With Your (God's) Power
ਬਿਸਨੁਪਦ ਪੁੰਨਿਯਾਕੀ
ਆਪਨਪੌ ਸ਼੍ਰੀ ਖਾਲਸਹਿ ਸੌਪਾਂ, ਦ੍ਵਤਯਿ ਰੂਪ ਸਤਿਗੁਰੂ ਗ੍ਰੰਥਾ ॥
I (Guru Gobind Singh Ji) have passed down (my form) to the Khalsa, the second Form of mine is the Granth
ਬੋਲਨ ਸਤਿਗੁਰੁ ਸਬਦ-ਸੋਭਾਖਨ, ਨਾਮ ਗੋਬਿੰਦ ਕੀਰਤਨਿ ਸੰਥਾ ॥
The recitation of the Shabad is the Satiguru's speach to us, whether it be Gods Name (simran roop), or through singing hymns (keertan), or through studying His Word (santhaa)
ਗੁਨਾਨੁਵਾਦ ਪੁਨਿ ਸਿਫਤਿ ਸਲਾਹਨਿ, ਊਠਤੁ ਬੈਠਤੁ ਸੈਨ ਕਰੰਥਾ ॥
By praising the Lord one becomes virtuous, whether standing or sitting
ਪਾਵਨ ਪੰਥ ਖਾਲਸਹਿ ਪ੍ਰਗਟਯੋ, ਚਾਰ ਵਰਨ ਆਸ਼੍ਰਮ ਸੁਭ ਪੰਥਾ ॥੧॥
The pure Panth, the Khalsa has came into being, that glorious Panth with four castes and four ashrams
ਇਨ ਕੇ ਦਰਸ ਸਤਿਗੁਰੁ ਕੋ ਦਰਸਨ, ਬੋਲਨ ਗੁਰੂ ਸਬਦੁ ਗੁਰੁ ਗ੍ਰੰਥਾ ॥
To behold it (the Khalsa) is to behold the Satiguru, (its members) repeat the Guru’s Word from the Guru Granth
ਦ੍ਵਾਦਸਿ ਰੂਪ ਸਤਿਗੁਰੁ ਏ ਕਹਿਯਤਿ, ਦ੍ਵਾਦਸਿ-ਭਾਨੁ ਪ੍ਰਗਟ ਹਰਿ ਸੰਤਾ ॥
In twelve forms the Satiguru appears, just as twelve rays of the sun reflect the light of God (Hari)
ਪ੍ਰਤਯਖ ਕਲਾ ਪਾਰਬ੍ਰਹਮ ਧਣੀਛੈ, ਗ੍ਰੰਥਿ ਪੰਥ ਖਾਲਸ ਵਰਤੰਤਾ ॥
The visible power of God is manifested in the Khalsa as (the doctrine of the Guru) Granth and (that of the Guru) Panth
ਦਾਸ ਗੋਬਿੰਦ ਫਤਹ ਸਤਿਗੁਰੂ ਕੀ, ਖਾਸ ਗ੍ਰੰਥ ਗੁਰੁ ਰੂਪ ਬਦੰਤਾ ॥੨॥ਦੁਪਦ ੧॥
(Guru) Gobind (Singh) is the servant of the victorious Satiguru, he who reveals himself as the Khalsa and as the Guru Granth
*The translator is translating this line as "Daas Gobind Fatah Satiguru Ki, Khalsa Granth Gur Roop Badanta", which is different because the word Khaas is being replaced with Khalsa. In some Saroops (manuscripts) of Sarbloh Granth one can see Khalsa as being the word there, however in majority of the Saroops have Khaas, according to the Tikadhar of the Sarbloh Granth Steek.
If the word is Khaas, a more accurate translation might be, "(Guru) Gobind (Singh) is the servant of the victorious Satiguru, He who reveals the Granth as the True/Proper Form of the Guru"
To Listen to Katha of this shabad by the late Jathedar Baba Santha Singh Ji click the play button below.
ਤਖਤ ਸ੍ਰੀ ਹਜੂਰ ਸਾਹਿਬ - Takht Sri Hajoor Sahib
