' The wine of Christ '...

The mystic desires what Omar Khayyam calls wine; the wine of Christ, after drinking which, no one will ever thirst.

Bowl of Saki, by Hazrat Inayat Khan
Commentary by Pir-o-Murshid Inayat Khan:

There are many ideas which intoxicate man, many feelings there are which act upon the soul as wine, but there is no stronger wine than the wine of selflessness. It is a might and it is a pride that no worldly rank can give. To become something is a limitation, whatever one may become. Even if a person were to be called the king of the world, he would still not be emperor of the universe. If he were the master of earth, he would still be the slave of Heaven. It is the person who is no one, who is no one and yet all. The Sufi, therefore, takes the path of being nothing instead of being something. It is this feeling of nothingness which turns the human heart into an empty cup into which the wine of immortality is poured. It is this state of bliss which every truth-seeking soul yearns to attain.

Wine is symbolical of the soul's evolution. Wine comes from the annihilation of grapes, immortality comes from the annihilation of self.

I drink the wine of Thy divine presence and lose myself in its intoxication.

When the soul is illuminated, it will desire to find some other soul illuminated in like manner, and will find great joy and bliss in its society. Such a one will surely find others who are on the verge of illumination. Even a drunkard will find others to drink with. And so it is mystically. A very little light can be turned into a flame, and that flame into a very big flame. Why is it better to become a mystic than to remain a drunkard? As a matter of fact a drunkard will never be satisfied. The mystic will look for what Omar Khayyam calls wine: the wine of the Christ, after drinking which no one will ever thirst. He will always seek the wine whose intoxication never wears off. It is the only wine: the intoxication of the divine love.

There is a wine which the mystic drinks, and that wine is ecstasy. A wine so powerful that the presence of the mystic becomes as wine for everyone who comes into his presence. ... That intoxication is the love which manifests in the human heart. What does it matter, once a mystic has drunk that wine, whether he is sitting amongst the rocks in the wilderness, or in a palace? It is all the same. The palace does not deprive him of the mystic's pleasures, and neither does the rock take them away. He has found the kingdom of God on earth, about which Jesus Christ said, 'Seek ye first the kingdom of God, and all these things shall be added unto you.'